latest on the hunt for the national security leaker, edward snowden. He's on the ground. The u.S. Is on the hunt. And he is under scrutiny with more questions about whether intelligence officials told the truth to congress. Brian ross is here with the latest. Good morning, brian. Reporter: Good morning, george. It's game on between the former intelligence insider and the u.S. Spy agencies where he once worked. He has gone rogue. The u.S. Was tracking snowden, even before he appeared on that video recorded in hong kong. And snowden would know exactly how ever phone call, credit card transaction, internet logon, airport checkpoint. Every u.S. Surveillance program he revealed could be used to track him. If they want to get you, they'll get you in time. Reporter: Authorities tell abc news, prosecutors plan to use provisions of the espionage act to bring criminal charges against snowden, with a possible penalty of life in prison. He has said from the start that he knows that once he made the choice to inform the public about these programs that all of his options were bad options. I think it's safe to say that he won't be living a free and unrestrained life. Reporter: In washington, members of congress began a series of top-secret briefings on the programs snowden revealed. Anybody who reveals classified information, is doing, you know -- is undermining our intelligence programs. Reporter: But there continue to be questions about whether congress was misled about the secret programs. Including this exchange, with the director of national intelligence, james clapper, in march. Does the nsa collect any type of data at all on millions or hundreds of millions of americans? No, sir. It does not. Not wittingly. Reporter: Now, that answer is beingalled into question. The leaks that snowden revealed about the phone records of millions of americans were, in fact, being collected by the government for years, george.

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